Round: 44 Ground: Hardcourt outdoor
| ITF Poland F3 Qual | 2017/06/24 08:00 | Jan Galka v Elliott Orkin | 4-6,5-7 |
| ITF Poland F2 | 2017/06/20 11:00 | Elliott Orkin v Ricardo Hocevar | 7-6,4-6,5-7 |
| ITF Poland F2 | 2017/06/19 11:05 | Michal Dembek v Elliott Orkin | 7-6,2-6,5-7 |
| ITF Poland F2 | 2017/06/18 08:30 | Sam Taylor v Elliott Orkin | 6-7,3-6 |
| ITF Poland F2 | 2017/06/17 08:00 | Elliott Orkin v Karl Friberg | 6-4,1-6,7-5 |
| ITF Poland F1 | 2017/06/15 09:00 | Mariano Kestelboim v Elliott Orkin | 6-0,6-1 |
| ITF Poland F1 | 2017/06/13 08:00 | Daniel Appelgren v Elliott Orkin | 6-2,6-7,0-6 |
| ITF Poland F1 | 2017/06/11 08:00 | Elliott Orkin v Timo Stodder | 6-4,7-5 |
| ITF Italy F16 Qual | 2017/06/04 13:05 | Wilson Leite v Mattias Siimar | 6-4,6-0 |
| ITF Italy F16 Qual | 2017/06/03 08:30 | Paolo Dagnino v Mattias Siimar | 2-6,3-6 |
| Davis Cup | 2017/04/09 09:00 | Mattias Siimar v Lucas Catarina | 4-6,6-4,6-7 |
| Davis Cup | 2017/02/05 08:00 | Lloyd Harris v Mattias Siimar | 7-5,6-3 |
| ITF Egypt F2 | 2017/01/23 08:00 | Libor Salaba v Mattias Siimar | 7-6,6-3 |
| ITF Egypt F2 | 2017/01/22 10:30 | Mattias Siimar v Nicolas Uryson | 6-2,6-7,6-4 |
| ITF Estonia F3 | 2016/11/01 12:05 | Alexander Vasilenko v Mattias Siimar | 6-1,6-3 |
| ITF Estonia F2 | 2016/10/27 14:30 | Kenneth Raisma v Mattias Siimar | 6-1,6-4 |